Career at Hogwarts

At some point, Sinistra applied for a teaching position at Hogwarts School of Witchcraft and Wizardry and was accepted, becoming a Hogwarts Professor. She taught her lessons at midnight at the top of the Astronomy Tower, the highest point of the castle.[8] Her students each required a telescope for her lessons, and she taught all about the different stars and constellations, as well as moons and planets.

1997-1998 and the Battle of Hogwarts

This year Hogwarts had fallen into Voldemort's influence, who made the Death Eaters, Amycus Carrow and Alecto Carrow became teachers at Hogwarts. On 2nd May 1998, Voldemort and his Death Eaters attacked Hogwarts. It is likely she, along with the rest of the faculty, fought at the Battle of Hogwarts.

Etymology

Professor Sinistra's surname originates from the Latin "sinister", meaning "left" or "with a direction to the left".[10] The most probable explanation for this is that the planets of the solar system rotate counterclockwise (from right to left). Sinistra is also the name of a star of the constellation of Ophiuchus. The contemporary meaning of the word "sinister" is "having bad intent""[11] , but considering Professor Sinistra's uninvolvement in the plot this likely has no meaning to the story.

The first name 'Aurora' indicates a relationship with the dawn, however it is probably derived from 'Aurora', a phenomena which occurs when solar winds interact with the earth's magnetic field.[12]